This is one very nice original side yoke.  

Part Brand: GM, General Motors

Manufacturer: General Motors

Manufacturer Part #: 3872922

Group #:

5.425

Casting #: 3872923-X

Casting Date: 1963-1979

Placement Details: HD Differential Side Yoke

Corvette Series: C2 1963-1967

C3 1968-1982

Chevy Corvette L88 435 Hp Heavy Duty Rear Axle Side Axle/Side Yoke/Stub Axle (GM Part Number 3872922, GM Group Number 5.425) for 

1963 63 1964 64 1965 65 1966 66 1967 67 1968 68 1969 69 1970 70 1971 71 1972 72 1973 73 1974 74 1975 75 1976 76 1977 77 1978 78 and 1979 Corvettes with big blocks and Corvettes with heavy duty suspension 

See pictures to see what your getting and condition.  

I HAVE A SECOND ONE LISTED AS WELL IF YOU NEED TWO AND CAN SHIP TOGETHER.